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CN1362816A - System and method for processing multi-media information bag in medium access control processor - Google Patents

System and method for processing multi-media information bag in medium access control processor Download PDF

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CN1362816A
CN1362816A CN 01138684 CN01138684A CN1362816A CN 1362816 A CN1362816 A CN 1362816A CN 01138684 CN01138684 CN 01138684 CN 01138684 A CN01138684 A CN 01138684A CN 1362816 A CN1362816 A CN 1362816A
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medium
method
processing
multi
processor
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CN100438459C (en )
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金昊均
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Lg电子株式会社
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic regulation in packet switching networks
    • H04L47/10Flow control or congestion control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic regulation in packet switching networks
    • H04L47/10Flow control or congestion control
    • H04L47/24Flow control or congestion control depending on the type of traffic, e.g. priority or quality of service [QoS]
    • H04L47/245Flow control or congestion control depending on the type of traffic, e.g. priority or quality of service [QoS] using preemption

Abstract

本发明涉及一种LAN中MAC处理器的多媒体信息包的处理系统和方法,特别涉及无线LAN中MAC处理器的多媒体信息包处理系统和方法,它不仅处理通常在MAC层中进行的数据传输而且实时处理话音或运动图像数据。 The present invention relates to a LAN MAC processor in a processing system and method for multimedia packet, in particular, it relates to a multimedia information processing system and method for packet wireless LAN MAC processor, which only process the data transmission is typically performed in the MAC layer and real-time processing of voice or motion picture data. 它推迟允许一定延迟量的普通数据的传输,并且在普通数据信息包之前传输运动图像信息包或话音信息包。 It allows a certain amount of delay to delay the transmission of normal data, and transmits the moving image or voice packets in the packet before the normal data packet. 被推迟的数据信息包被存储在双缓冲器模块的第二缓冲器模块中。 The delayed packet of data is stored in the second buffer module double buffer module. 当所有运动图像信息包或话音信息包被传输后,基于重传延时过程,存储在双缓冲器模块的第二缓冲器模块中的被推迟的数据信息包在存储于双缓冲器模块的第一缓冲器模块中的等待的数据信息包之前被传输。 When all the moving image or voice packets are transmitted packet-based retransmission delay process, the buffer module stored in the second double-buffer module is delayed in the first data packet is stored in the double buffer module a buffer module is transmitted before the data packet is waiting. 因此,可以无延缓地传输实时运动图像信息包或话音信息包。 Thus, real-time transmission of moving image or voice packet to the packet without delay.

Description

在媒体访问控制处理器中处理多媒体信息包的系统和方法 In the medium access multimedia information processing system and method for controlling packet processor

发明领域本发明涉及一种在局域网(LAN)的媒体访问控制(MAC)处理器中处理多媒体信息包的系统和方法,尤其是涉及在无线LAN中的MAC处理器中处理多媒体信息包的系统和方法,使用此系统和方法,不仅可以传输在MAC层中处理的数据,而且可以实理处理话音或运动图像。 Field of the Invention The present invention relates to a system and method for processing multimedia information in a packet network (LAN) Media Access Control (MAC) processor, and more particularly to systems in the wireless LAN MAC processor for processing multimedia information in the packet and the method of using the system and method, not only the data transmission processing in the MAC layer, and processing can be achieved for processing voice or moving images.

无线LAN的普通MAC处理器使用CSMA/CA方法进行指数随机重传延时处理以进行数据传输。 Common MAC processor of a wireless LAN CSMA / CA method exponential random retransmission delay processing for data transmission. 一旦检测到媒体(站试图将MAC协议数据单元(MPDU)发送到该媒体)正处于忙状态,则进行指数随机重传延时过程。 Upon detecting the media (station attempts to MAC protocol data unit (the MPDU) is sent to the media) is in a busy state, the exponential random retransmission delay process. 重传延时过程由随机重传延时时间方程选定。 Retransmission delay retransmission process is selected by a random delay time equation. 重传延时定时器由媒体空闲的时隙进行减数。 Retransmission Delay timer idle slots decreases in the media. 当媒体处于忙状态时,重传延时定时器停止。 When the media is busy, retransmission delay timer is stopped. 当检测到媒体空闲时间长于分布式帧间间隔(DIFS)时重传延时定时器重新开始减数。 When detecting the idle time is longer than the media distributed inter-frame space (the DIFS) retransmission delay timer restarts subtrahend. 一旦重传延时定时器为零即开始数据传输。 Once the delay timer is zero i.e. the retransmission start data transfer.

传输MPDU后,站让另一个MPDU进行上述的重传延时过程。 After MPDU transfer, so that other stations perform the retransmission MPDU during the delay. 在此,需要确保站具有公平和相等的机会去访问媒体。 Here, the need to ensure that the station has a fair and equal opportunity to access the media. 当有多个站正在等待且已经进行了随机重传延时过程时,通过随机函数选中最小等待时间的站在访问争先中胜出。 When there are a plurality of waiting stations, and has a random retransmission delay process, the minimum access latency standing first to win selected by a random function.

上述方法在先入先服务原则的基础上能保证公平的访问,因为在争先中失败的站在下一个DIFS后再次等待并且比其它第一次参与重传延时的站具有更短的重传延时延迟时间。 Preceding the above-described method on the basis of first-served basis to ensure a fair access, since the first to fail in standing waiting DIFS again after the next and have a shorter delay than other retransmitting retransmission stations participating in the first delay delay.

图1为图示传统无线LAN中的MAC处理器的重传延时过程的框图。 FIG. 1 is a block diagram illustrating the process of this delay in the conventional wireless LAN MAC processor.

如图1所示,进行重传延时过程以使等待了较长时间的站能具有更多的机会来访问信道。 1, the retransmission delay of the process to the standby station for a long time can have more opportunities to access channel. 在争先中失败的站的等待时隙减少。 Waiting for the time slot in the first to fail in the station is reduced. 如果先进行RTS/CTS消息交换,则仅当2个或多个站选择同一时隙时才会出现冲突。 If the first for RTS / CTS message exchange, a conflict will appear when two or more stations select the same time slot only if. 然后,这些站以争先窗口值重新进入争先状态,该争先窗口值以指数级增长。 Then, these stations to re-enter the value of the scramble window rushed state, the first to the window value exponentially.

例如,如果某一站想要发送数据但是信道已被占用,则该站必须等待直到前一用户使用完毕。 For example, if a station wants to transmit data, but the channel is occupied, then the station must wait until the completion of a user. 一个DIFS时间过去之后,位于重传延时窗口中的时隙被随机地选择。 After a DIFS time elapses, the retransmission delay window situated in the time slots are randomly selected.

之后,已选择初始时隙的站开始传输。 Thereafter, the selected station starts transmission of initial slot. 仅当2个或多个站选中同一时隙时才出现冲突。 Only when two or more stations select the same time slot conflict. 由于其它站已选择初始时隙而在争先中失败的站将重传延时计数器冻结。 Since the other station has been selected and an initial slot in the first to the station failed retransmission delay counter is frozen. 在接下来的争先中,在上一次争先中失败的站获得较高的优先度,因为它仅需等待剩余的时隙。 In the first to the next station in the first to a failure in obtaining a higher priority, since it requires waiting for the remaining slots.

如上所述,在传统的无线LAN中,进行允许有一定延迟量的随机重传延时过程以进行数据传输。 As described above, in the conventional wireless LAN, to allow a certain amount of delay for a random delay retransmission procedure for data transmission. 当传输话音或运动图像时,数据传输将常常由于延迟而被延缓。 When the transmission of voice or moving image, the data transmission is often delayed due to a delay. 另外,在传统的随机重传延时方法中,[根据传输速度随机地确定传输优先度可能会显著影响吞吐量。 Further, in the conventional method of random retransmission delay, [randomly determined transmission priority can significantly affect the throughput according to the transmission speed. ]因此,在传统的无线LAN中,事实上由于这些问题而不可能实时处理话音或运动图像数据。 ] Thus, in the conventional wireless LAN, since the fact that these problems can not handle voice or real-time moving image data.

为了实现上述目的,根据本发明的优选实施例,位于无线LAN中的MAC处理器的多媒体信息包处理系统包括:动态重传延时访问模块,它为具有较高优先度的信息包设置重传延时定时器,使得在传输其它信息包之前传输这个具有较高优先度的信息包;优先度抢先模块,它根据动态重传延时访问模块中确定的优先度先传输具有较高优先度的信息包;双缓冲器模块,它根据优先度抢先模块的控制存储和传输要在无线LAN中传输的信息包。 To achieve the above object, according to a preferred embodiment of the present invention, the multimedia packet processing system is located in the wireless LAN MAC processor comprising: a dynamic access module of a retransmission delay, which is provided with a retransmission packet of a higher priority delay timer, so that the transmission of this information packet having a higher priority prior to transmission of other packets; preemptive priority module, it first has higher priority transmission according to the priority of the dynamic access module retransmission delay determined packet; double buffer module, the control module first to its storage and transmission of packets to be transmitted in a wireless LAN based on the priority level.

优选地,动态重传延时访问模块为具有较高优先度的信息包设置的重传延时时间短于为其它具有较低优先度的信息包设置的重传延时时间。 Preferably, a retransmission delay time is a retransmission delay of dynamic access module is configured to have a higher priority packet is shorter than the retransmission delay is set for the other packets having a lower priority level.

更为优选地,动态重传延时访问模块在传输前按照运动图像,话音和其它数据的顺序确定要在无线LAN中传输的信息包的传输优先度。 More preferably, the dynamic access module of a retransmission delay according to the motion picture, voice and other data sequence to be transmitted is determined priority packets in the wireless LAN are transmitted prior to transmission.

更为优选地,优先度抢先模块使具有高优先度的运动图像或话音能够抢占双缓冲器模块中被普通数据信息包占据的部分。 More preferably, the priority preemptive module causes a moving image or a voice having a high priority can preempt the double buffer module section occupied by the normal data packet.

更为优选地,如果无线LAN中有运动图像或话音信息包要传输,优先度抢先模块延迟数据信息包的传输,先传输这些运动图像或话音信息包,然后传输被抢先的数据信息包。 More preferably, if the moving image or voice information packet to be transmitted, the priority preemptive delay module transmitting data packets, the first transmission of a moving image or a voice packet, then the data transmission is preempted packet wireless LAN.

更为优选地,双缓冲器模块包括第一缓冲器模块,它存储并管理在动态重传延时访问模块的重传延时过程之前接收到的数据信息包;第二缓冲器器模块,它存储并管理被抢先的数据信息包,此数据信息包等待在具有更高优先度的信息包传输之后被传输。 More preferably, a double buffer module comprises a first buffer module, which stores and manages the received delay before retransmission delay during dynamic access module retransmission data packet; second buffer module, it preempted store and manage data packet, the data packet waiting to be transmitted after the transmission of higher priority packet having a degree.

为了实现上述目的,根据本发明的优选实施例,位于无线LAN中的MAC处理器的多媒体信息包处理方法包括如下步骤:当在普通数据信息包的传输中输入了具有更高优先度的信息包时,延缓某些数据信息包的传输并且先处理具有更高优先度的信息包;将抢先于其它数据信息包的传输的更高优先度的信息包传输出去,同时,单独地存储被抢先的数据信息包;和在将具有更高优先度的所有信息包传输出去之后读出并且传输所存储的被抢先的数据信息包。 To achieve the above object, according to a preferred embodiment of the present invention, located in the multimedia packet processing method in the wireless LAN MAC processor comprises the steps of: when the input information packet having a higher priority in transmission of normal data packet when, some data packet transmission delay and to process packets with higher priority degrees; higher priority to preempt the transmission of other data packets out of the packet transmission, simultaneously, separately stored preempted data packets; and after all the packets have a higher priority transmission and transmits the read out the stored data packet is preempted.

优选地,被抢先的数据信息包被存储在双缓冲器模块中单独的缓冲器区。 Preferably, the preempted packet data is stored in a separate double buffer module buffer zone.

更为优选地,被抢先的数据信息包的传输过程包括如下步骤:基于排队技术,为排在所存储的被抢先数据信息包中当前要求传输的其它数据信息包之前的数据包设置更短的重传延时时间;确定是否所有具有高优先度的信息包已被传输;在高优先度的信息包已全被传输出去的情况下,在当前要求传输的数据信息包的传输之前先将被抢先的数据信息包传输出去;和在所有的被抢先数据信息包被传输之后将当前要求传输的数据信息包传输出去。 More preferably, the process is the first to transmit data packets comprising the steps of: queuing based technology, is stored in the row is the first to claim a data packet currently transmitted packet data is provided other data packets prior to shorter retransmission delay time; determining whether all packets having a high priority has been transmitted; in the case of high priority packets have all been transmitted out, prior to transmission of data packets currently required to be transmitted first preemptive out packet transmission data; and a transmission out after all the data packets are transmitted first to the current data packet transmission requirements.

根据本发明的优选实施例,位于无线LAN中的MAC处理器的多媒体信息包处理方法还可以包括如下步骤:按照运动图像,话音和普通数据的顺序设置将要被传输的信息包的优先度,并为具有更高优先度的信息包设置更短的重传延时时间。 According to preferred embodiments of the present invention, the multimedia packet processing method is located in the wireless LAN MAC processor may further comprise the step of: in accordance with the moving image, are sequentially disposed voice and the normal data the priority information packet to be transmitted, and setting a shorter delay time is a retransmission packet having a higher degree of priority.

图2为图示根据本发明的优选实施例的无线LAN中的MAC处理器的多媒体信息处理的结构的框图。 FIG 2 is a block diagram of a multimedia information processing illustrating a wireless LAN according to a preferred embodiment of the present invention, the MAC processor.

图3为图示根据本发明的优选实施例的无线LAN中的MAC处理器的多媒体信息包处理方法的流程图。 FIG 3 is a flowchart illustrating a multimedia wireless LAN packet processing method of the preferred embodiment of the present invention, the MAC processor.

图4为图示图3中的动态重传延时访问模块工作的框图。 FIG 4 is a block diagram of this delay work dynamic access module 3 shown in FIG.

优选实施例详述以下对附图所示的根据本发明优选实施例的无线LAN中MAC处理器的多媒体信息包的处理进行详细的说明。 DETAILED DESCRIPTION Hereinafter, preferred embodiments Example processing multimedia packet in the wireless LAN MAC processor shown in the drawings according to a preferred embodiment of the present invention will be described in detail.

根据本发明的优选实施例,如图2所示,位于无线LAN中的MAC处理器的多媒体信息包处理系统包括:动态重传延时访问模块10,优先度抢先模块20和双缓冲器模块30。 According to a preferred embodiment of the present invention, shown in Figure 2, the multimedia packet processing system is located in the wireless LAN MAC processor comprising: a dynamic access module 10 of this delay, the priority preemptive module 20 and buffer module 30 bis .

动态重传延时访问模块10按照(例如)运动图像,话音和其它数据的顺序设置要在无线LAN中传输的信息包的优先度,并且使信息包能按照指定的优先度顺序传输。 Dynamic retransmission delay according to the access module 10 (e.g.) a moving image, voice and other data is sequentially provided to the priority in the packet transmitted in the wireless LAN, and so that the packet can be transmitted in order of priority specified. 由于传统的随机重传延时过程不适合此目的,本发明中,在检查环境时预先确定的高优先度信息包可以具有更短的重传延时时间,以更早地传输。 Since the conventional random retransmission delay process is not suitable for this purpose, in the present invention, when checking the environment of the predetermined high priority packet may have a shorter retransmission time delay, to transmit earlier. 换句话说,具有高优先度的信息包(例如运动图像信息包或话音信息包)具有比数据信息包更短的重传延时时间。 In other words, an information packet (e.g., moving image or voice packet information packets) than a shorter data packet retransmission delay time of the high degree of priority. 结果,可以比传统的随机重传延时过程更为有效地进行实时传输。 As a result, real-time transmission can be performed more efficiently than conventional random retransmission delay process.

更为特别地,如果无线LAN中的信息包为数据信息包,则动态重传延时访问模块10进行随机重传延时过程。 More particularly, if the wireless LAN packet as a data packet, retransmission delay, the dynamic random access module 10 during the delay retransmission. 相反,如果要传输高优先度信息包(例如运动图像信息包或话音信息包),则使用根据一定的规则设定优先度的方法,而不是使用随机争先窗口(CW)方法。 Conversely, if the transmission of high priority packets (e.g., packets moving image or voice packet), using a method of setting the priority in accordance with a predetermined rule instead of randomly Sprint window (CW) method. 因此,具有更高优先度的信息包被先传输。 Thus, the packet having a higher priority is first transmitted.

优先度抢先模块20使双缓冲器模块20中被普通数据占据的部分被具有更高优先度的信息包(例如运动图像信息包或话音信息包)争用,此更高的优先度是在动态重传延时访问模块10中确定的。 Preemptive priority module 20 module 20 so that the double buffer is occupied by the normal data packet having a portion (e.g., moving image or voice packet information packets) contend with a higher degree of priority, the higher priority is a dynamic the access module 10 of this delay determined.

传统的随机重传延时方法中,在运动图像或话音实时传输的情况下,运动图像或话音必须无延缓地传输。 Conventional random retransmission delay method, in a case where a moving image or a real-time transmission of voice, moving image or voice to be transmitted without delay. 因此,如果任何此类要进行实时传输的信息包进入无线LAN,这些信息包必须立即无任何延迟地传输。 Thus, if any such packets to be transmitted in real time into the wireless LAN, a packet information to be transmitted immediately without any delay. 然而,如果没有足够的空间用于此类运动图像信息包或话音信息包的传输,相关的信息包将等待直到具有足够的空间。 However, if there is not enough space for the transmission of such a moving image or voice packet information packet associated with the packet will wait until enough space. 这种等待导致了传播延迟的增加。 This led to an increase wait for propagation delay. 为了克服传统方法的这种问题,优先度抢先模块20暂时推迟允许一定延迟量的数据信息包的传输并且将此信息包存储于双缓冲器模块30中。 In order to overcome such problems of the conventional method, the priority module 20 temporarily postpone the first to allow a certain amount of delay of the transmission of data packets and this packet is stored in the double buffer module 30. 然后,优先度抢先模块20首先传输相关的运动图像信息包或话音信息包。 Then, the priority preemptive module 20 first transmission packet related to a moving image or voice information packet. 所有的此类信息包传输完之后,再传输被抢先的数据信息包。 After all such packets completely transmitted, then the data transmission is preempted packet.

双缓冲器模块30根据优先度抢先模块20的控制存储信息包并且传输此信息包。 Double buffer module 30 stores packets in a preemptive control module 20 according to the priority and transmits the information packet. 双缓冲器模块30包括第一缓冲器模块31,它存储和管理在重传延时过程之前接收到的数据信息包,以及第二缓冲器模块32,它存储和管理等待在高优先度信息包(例如运动图像信息包或话音信息包)传输之后进行传输的被抢先的数据信息包。 The buffer module 30 comprises a first double-buffer module 31, which stores and manages the received during the delay before retransmission data packet, and a second buffer module 32, which waits for the storage and management of high priority packet (e.g., moving image or voice packet information packet) is preempted data packets transmitted after the transmission.

以下参照图3的流程图对根据本发明优选实施例的位于无线LAN中的MAC处理器的多媒体信息包处理方法进行说明。 3 is a flowchart of a method for processing multimedia information packet is located in the wireless LAN MAC processor according to a preferred embodiment of the present invention will be described with reference to the following.

首先,动态重传延时访问模块10按照运动图像,话音和普通数据的顺序设置要在无线LAN中传输的信息包的优先度。 First, a retransmission delay of dynamic access module 10 in accordance with the moving image, voice and the normal data sequentially provided to the priority in the packet transmission in a wireless LAN is. 动态重传延时访问模块10为运动图像信息包或话音信息包设置比普通数据信息包更短的重传延时时间,其中运动图像信息包或话音信息包是具有比普通数据信息包更高的优先度的信息包。 Retransmission delay dynamic access module 10 as a moving image or voice packet information packet is provided shorter than the normal data packet retransmission delay time, wherein the moving image information or voice information packet is a packet having a higher than normal data packets priority packets.

因此,当存储在双缓冲器模块30的第一缓冲器模块31中的数据信息包通过占据给定的时隙而被传输时,动态重传延时访问模块10确定是否有任何具有更高优先度的运动图像或者话音信息包输入(S10)。 Thus, when the data packet stored in the buffer of the first double-buffer module 31 by module 30 when occupying a given time slot is transmitted, retransmission delay dynamic access module 10 determines whether there is any higher priority having a moving image or voice information of the input packet (S10).

如果在步骤S10中确定没有比正在传输的数据信息包具有更高优先度的运动图像或话音信息包输入,则动态重传延时访问模块10试图以传统的重传延时过程同样的方式进行媒体访问。 If having determined that no moving image or voice input packet a higher priority than the data packets being transmitted in step S10, the retransmission delay, the dynamic access module 10 attempts retransmission delays in a conventional process in the same manner media access. 优先度抢先模块20根据动态重传延时访问模块10的访问控制使存储在双缓冲器模块30的第一缓冲器器模块31中的数据信息包能被传输(S12)。 Preemptive priority module 20 according to the dynamic access latency retransmission control access module 10 so that the data can be transmitted packet stored in the buffer of the first double-buffer module 30 module 31 (S12).

另外,如果步骤S10中确定有比正在传输的数据信息包具有更高优先度的运动图像或话音信息包输入,如图3所示,动态重传延时访问模块10为此类高优先度运动图像或话音信息包设置比数据信息包更短的重传延时时间。 Further, if the determination in step S10 that there is data being transmitted over a packet having a moving image or voice input packet a higher priority, and 3, a retransmission delay of dynamic access module 10 of the motion for such a high priority in FIG. image or voice packet data is provided shorter than the retransmission packet delay time. 优先度抢先模块20使此类高优先度的运动图像信息包或话音信息包抢先于存储在双缓冲器器模块30的第一缓冲器器模块之中的数据信息而占到时隙。 Preemptive priority module 20 such that the moving image or voice packets of high priority packet data stored in the first to the double buffer module first buffer module 30 accounted for among the slots. 因此,延缓了此类数据信息包的传输(S14)。 Therefore, such delayed transmission of data packet (S14).

之后,优先度抢先模块20将被抢先的数据信息包存储在双缓冲器模块30的第二缓冲器模块32中,此信息包的传输在步骤S14(S16)中被推迟,并且传输在步骤S14(S18)中抢到时隙的高优先度运动图像信息包或话音信息包。 Thereafter, the priority of data packet storage module 20 first to be preempted in the double buffer module 30 of the second buffer module 32, the transmission of this packet is delayed in the step S14 (S16), and is transmitted in step S14 (S18) in slot grab high priority packets moving image or voice packets.

其后,确定是否所有相关的运动图像信息包或话音信息包都已由步骤16(20)传输。 Thereafter, it is determined whether all packets related to a moving image or voice packet are 16 (20) is transmitted by step. 如果传输已完成,则传输存储于双缓冲器模块30的第二缓冲器模块32中的数据信息包(S22)。 If the transmission has been completed, the transport module is stored in the double buffer 30 buffers the second module data packet (S22) 32.

为了防止存储于双缓冲器模块30的第二缓冲器模块32中的数据信息包的传输发生显著的传播延迟,动态重传延时访问模块10为存储于双缓冲器模块30的第二缓冲器模块32中的被抢先的数据信息包采用排队技术。 In order to prevent transmission of data stored in the packet occurring in a second module 32, double buffer module 30 buffers significant propagation delay, retransmission delay dynamic access module 10 is stored in the double buffer module 30 of the second buffer 32 modules are preempted packet data queuing techniques. 换句话说,先排队的数据信息包获得比其它存储于双缓冲器模块30的第一缓冲器模块31中的数据信息包更短的重传延时时间。 In other words, the first queued data packets obtained in the double buffer module is a first module 30 buffers the packet data in the memory 31 is shorter than the other delay time of retransmission. 因此,优先度抢先模块20使存储于双缓冲器模块30的第二缓冲器模块32中的被抢先的数据信息包能够抢占相关的时隙,并且在存储于双缓冲器模块30的第一缓冲器模块31中的其它数据信息包之前传输。 Thus, the priority of the memory module 20 in the first to double buffer module 30 of the second buffer module preempted data packet can preempt associated slot 32, and stored in the double buffer module first buffer 30 other data packets prior to transmission in the module 31.

如上所述,根据本发明的优选实施例,在无线LAN中的MAC处理器的多媒体信息包处理方法通过按照运动图像,话音和其它数据的顺序设置优先度,从而在传输数据信息包之前先传输实时运动图像或话音信息包,当输入了更高优先度的信息包时,延缓允许一定延迟量的数据信息包的传输,而先传输实时运动图像信息包或者话音信息包,从而使得本发明能够比传统的随机重传延时方法更为有效地传输实时数据。 As described above, according to the preferred embodiment of the present invention, the multimedia packet processing method in the wireless LAN by the MAC processor in accordance with the moving image, voice and other data sequentially priority setting, so that the first transmission before transmitting data packets real-time moving image or a voice packet, when the packet is inputted to a higher priority, allowing the transmission delay amount of a delay of data packets, and to transmit real-time moving image or voice packet information packets, so that the present invention can be real-time data transmission more efficiently than the conventional method of random retransmission delay.

另外,根据本发明的优选实施例,位于无线LAN中的MAC处理器的多媒体信息包处理方法延缓允许一定延迟量的数据信息包的传输,以先传输运动图像或话音之类的实时多媒体数据,其中被延缓的数据信息包存储于双缓冲器模块30的第二缓冲器模块32中,并且,所有的运动图像信息包或话音信息包都被传输后,根据重传延时过程,被延缓的数据信息包将在存储于双缓冲器模块30的第一缓冲器模块31中的其它数据信息包之前被传输。 Further, according to a preferred embodiment of the present invention, located in the multimedia packet processing method in the wireless LAN MAC processor allows a certain amount of delay to delay the transmission of data packets, before transmission of real-time multimedia moving image or voice data or the like, wherein the data packet is stored in the second buffer is delayed double-buffer module 30 module 32, and all the moving image or voice packets are transmitted after the information packet, the delay according to the retransmission process is delayed data packets to be transmitted before the first buffer module 30 is stored in the double buffer module 31 to other data packets.

如果在数据传输期间输入了实时运动图像信息包或话音信息包,则推迟允许一定延迟量的数据信息包的传输,并且通过上述步骤先传输运动图像或话音信息包。 If during the data transmission of real-time moving image input packets or voice packets, delayed transmission is to allow a certain amount of delay of data packets, and to transmit a moving image or voice packets through the above steps. 结果,在传输期间无延迟地传输实时数据成为可能。 As a result, during the transmission of real-time data transmission without delay is possible.

上述的位于无线LAN中的MAC处理器的多媒体信息包处理方法的实施例仅仅是示例性的,并不构成对本发明的限制。 Example multimedia information of the packet processing method of a wireless LAN is located in the MAC processor merely exemplary and are not to be construed as limiting the present invention. 对于本领域技术人员,很显然可以有许多替换,修改和变化。 For skilled in the art, it is clear that there can be many alternatives, modifications and variations.

Claims (10)

  1. 1.一种无线局域网(LAN)中的媒体访问控制(MAC)处理器的多媒体信息包处理系统,包括:动态重传延时访问模块,用于根据信息包的优先度设置信息包的重传延时定时器,以在无线LAN中先传输更高优先度的信息包;优先度抢先模块,用于按照动态重传延时访问模块所确定的信息包的优先度顺序,先传输更高优先度的信息包;双缓冲器模块,用于根据优先度抢先模块的控制,存储和传输要在无线LAN中传输的信息包。 A wireless local area network (LAN) Media Access Control (MAC) packet processor multimedia information processing system, comprising: a retransmission delay dynamic access module for setting priority of the packet according to the retransmission packets delay timer for the first transmission of a higher priority packet in the wireless LAN; preemptive priority module for sequentially access module delay priority information determined according to a dynamic packet retransmission, a higher priority to the transmission of the packet; double buffer module, configured to pre-empt control module, storage and transmission according to the priority information to be transmitted in the packet of the wireless LAN.
  2. 2.根据权利要求1所述的无线LAN的MAC处理器的多媒体信息包处理系统,其中动态重传延时访问模块为更高优先度的信息包设置比低优先度的其它信息包更短的重传延时时间。 The multimedia information processing system according to a packet of a wireless LAN MAC processor as claimed in claim, wherein the retransmission delay of the dynamic access module of higher priority packets is provided shorter than the other packets of low priority retransmission delay time.
  3. 3.根据权利要求1所述的无线LAN的MAC处理器的多媒体信息包处理系统,其中动态重传延时访问模块按照运动图像,话音和普通数据的顺序,预先设置要在无线LAN中传输的信息包的优先度。 The multimedia information processing system according to a packet of a wireless LAN MAC processor as claimed in claim, wherein the retransmission delay of the dynamic access module according to a moving image, voice and normal data sequentially, is set in advance to be transmitted in the wireless LAN priority packets.
  4. 4.根据权利要求1所述的无线LAN的MAC处理器的多媒体信息包处理系统,其中优先度抢先模块使具有更高优先度的运动图像信息包或话音信息包能够抢占双缓冲器模块中被数据信息包占据的部分。 The wireless LAN according to claim 1 MAC processor packet multimedia information processing system in which a preemptive priority module having a moving image so that a voice packet or a packet of higher priority can preempt the double buffer module is data packet occupies part.
  5. 5.根据权利要求1所述的无线LAN的MAC处理器的多媒体信息包处理系统,其中优先度抢先模块在无线LAN有任何要传输的运动图像信息包或话音信息包时推迟数据信息包的传输,首先传输此类运动图像信息包或话音信息包,然后传输被抢先的数据信息包。 The multimedia information processing system according to a packet of a wireless LAN MAC processor as claimed in claim, wherein the transmission module has preemptive priority data packets delayed moving image or voice packets in any packet to be transmitted in a wireless LAN first moving image transmission of such packets or voice packet, then the data transmission is preempted packet.
  6. 6.根据权利要求1所述的无线LAN的MAC处理器的多媒体信息包处理系统,其中双缓冲器模块包括:第一缓冲器模块,存储和管理在动态重传延时访问模块的重传延时过程之前接收到的数据信息包;和第二缓冲器模块,存储和管理在具有更高优先度的信息包的传输之后等待传输的被抢先的数据信息包。 The multimedia information processing system according to a packet of a wireless LAN MAC processor, wherein the double buffer module comprises: a first buffer module, storing and managing the retransmission delay of the delay in a dynamic access module retransmission previously received data packet when the process; and a second buffer module, storage and management after awaiting transmission packets having a higher transmission priority of packet data to be preempted.
  7. 7.一种无线LAN的MAC处理器的多媒体信息包处理方法,包括如下步骤:如果输入了更高优先度的信息包,则延缓无线LAN中正在传输的数据信息包的传输并使更高优先度的信息包能抢先于数据信息包而传输;同时存储被抢先的数据信息包和传输更高优先度的信息包;和所有的更高优先度的信息包被传输后,读出并传输所存储的被抢先的数据信息包。 Multimedia packet processing method of a wireless LAN MAC processor, comprising the steps of: if the input packet a higher priority, the transmission wireless LAN packet data being transferred is delay higher priority and of packets can preempt the data packet transmitted; at the same time storing the data packet and the first to transmit a higher priority packet; and after all higher priority packet is transmitted, and transmits the read out stored data packet is preempted.
  8. 8.根据权利要求7所述的无线LAN的MAC处理器的多媒体信息包处理方法,还包括步骤:按照运动图像,话音和普通数据信息包的顺序设置要在无线LAN中传输的信息包的优先度,并为更高优先度的信息包设置更短的重传延时时间。 Multimedia packet processing method of a wireless LAN MAC processor according to claim 7, further comprising the step of: moving image in accordance with the order of the voice-data packets and normal priority packets in the wireless LAN is transmitted degree, and to set a higher priority packet shorter retransmission delay time.
  9. 9.根据权利要求8所述的无线LAN的MAC处理器的多媒体信息包处理方法,其中被抢先的数据信息包被存储在双缓冲器模块的单独的缓冲器区中。 Multimedia packet processing method of a wireless LAN MAC processor according to claim 8, wherein the data is preempted packet is stored in a separate buffer zones double buffer module.
  10. 10.根据权利要求8所述的无线LAN的MAC处理器的多媒体信息包处理方法,其中传输被抢先的数据信息包的步骤包括如下步骤:在应用于所存储的被抢先数据信息包的排队技术的基础上,为先排队的数据信息包设置比其它要传输的数据信息包的重传延时时间更短的重传延时时间;确定是否所有的抢先于其它数据信息包的更高优先度的信息包已被传输;如果所有的更高优先度的信息包已被传输,则使被抢先的数据信息包具有比其它要传输的数据信息包更高的优先度,并传输这些被抢先的数据信息包;和在被抢先的数据信息包传输完后,传输其它的数据信息包。 Multimedia packet processing method of a wireless LAN MAC processor according to claim 8, wherein the step of data transmission is preempted packet comprises the steps of: the first to be applied to the stored data packet queuing techniques It based on the data set than the other packet data to be transmitted to packet queuing delay time shorter retransmission retransmission delay time; determining whether a higher priority preempt all other data packet packet has been transmitted; if all higher priority packet has been transmitted, so that the data packet is preempted higher than the other packet data to be transmitted priority degree, and the transmission is preempted data packets; and a preempted after the data packet transmission, transmission of other data packets.
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